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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "FileSystemRootDirectoryReader.h"
#include "CallbackRunnables.h"
#include "nsIGlobalObject.h"
#include "mozilla/dom/FileSystemDirectoryReaderBinding.h"
#include "mozilla/dom/FileSystemUtils.h"
namespace mozilla::dom {
namespace {
class EntriesCallbackRunnable final : public Runnable {
public:
EntriesCallbackRunnable(FileSystemEntriesCallback* aCallback,
const Sequence<RefPtr<FileSystemEntry>>& aEntries)
: Runnable("EntriesCallbackRunnable"),
mCallback(aCallback),
mEntries(aEntries) {
MOZ_ASSERT(aCallback);
}
// MOZ_CAN_RUN_SCRIPT_BOUNDARY until Runnable::Run is MOZ_CAN_RUN_SCRIPT. See
// bug 1535398.
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
Sequence<OwningNonNull<FileSystemEntry>> entries;
for (uint32_t i = 0; i < mEntries.Length(); ++i) {
if (!entries.AppendElement(mEntries[i].forget(), fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
}
mCallback->Call(entries);
return NS_OK;
}
private:
const RefPtr<FileSystemEntriesCallback> mCallback;
Sequence<RefPtr<FileSystemEntry>> mEntries;
};
} // anonymous namespace
NS_IMPL_CYCLE_COLLECTION_INHERITED(FileSystemRootDirectoryReader,
FileSystemDirectoryReader, mEntries)
NS_IMPL_ADDREF_INHERITED(FileSystemRootDirectoryReader,
FileSystemDirectoryReader)
NS_IMPL_RELEASE_INHERITED(FileSystemRootDirectoryReader,
FileSystemDirectoryReader)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileSystemRootDirectoryReader)
NS_INTERFACE_MAP_END_INHERITING(FileSystemDirectoryReader)
FileSystemRootDirectoryReader::FileSystemRootDirectoryReader(
FileSystemDirectoryEntry* aParentEntry, FileSystem* aFileSystem,
const Sequence<RefPtr<FileSystemEntry>>& aEntries)
: FileSystemDirectoryReader(aParentEntry, aFileSystem, nullptr),
mEntries(aEntries),
mAlreadyRead(false) {
MOZ_ASSERT(aParentEntry);
MOZ_ASSERT(aFileSystem);
}
FileSystemRootDirectoryReader::~FileSystemRootDirectoryReader() = default;
void FileSystemRootDirectoryReader::ReadEntries(
FileSystemEntriesCallback& aSuccessCallback,
const Optional<OwningNonNull<ErrorCallback>>& aErrorCallback,
ErrorResult& aRv) {
if (mAlreadyRead) {
RefPtr<EmptyEntriesCallbackRunnable> runnable =
new EmptyEntriesCallbackRunnable(&aSuccessCallback);
aRv =
FileSystemUtils::DispatchRunnable(GetParentObject(), runnable.forget());
return;
}
// This object can be used only once.
mAlreadyRead = true;
RefPtr<EntriesCallbackRunnable> runnable =
new EntriesCallbackRunnable(&aSuccessCallback, mEntries);
aRv = FileSystemUtils::DispatchRunnable(GetParentObject(), runnable.forget());
}
} // namespace mozilla::dom
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